Werke aktiengesellschaet



May 5, 1931.

H. KNOLL CALCULATING MACHINE Filed May 6, 1930 Fig.1.

C5 Shgets-Sheet l nw CN TO K y 1931. H. KNOLL CALCULATING MACHiNE Filed May 6, 1930 3 Sheets-Sheet 2 i May 5, 1931. H. KNOLL CALCULATING MACHINE Filed May 6. 1950 3 Sheets-Sheet 3 Patented May 5, 1931 UNITED STATES PATENT OFFICE HANS KNOLL, OF MUNICH, GERMANY, ASSIGNOR T0 MERCEDES BUROMASCHINEN- WERKE AKTIENGESELLSCEQAFT, 0]! BENSHAUSEN, GERMANY CALCULATING MACHINE Application filed May 6, 1930, Serial No. 450,286, and in Germany January 15, 1927.

This invention has reference to calculating machines with printing mechanism in which, in addition to the usual stationary counting means other counting means are provided which are moved along'with the paper carriage. With these machines there was the drawback that by the counting means which were moved with the paper carriage the printing was somewhatv concealed, so that complished in the subject matter of this in-' vention by the fact that the counting means which are mounted upon a carrier or support of the paper carriage are disposed between the usual calculating mechanism and the recording or writing mechanism, while the rack bars or the like which are intended to be operatively connected to the counting mechanisms are arranged in front of the type bars and are connected thereto.

My invention will be more fully described by reference to the accompanying drawings showing by way of exemplification an embodiment of the principles of the invention as applied for instance to a calculating or adding machine of the kind set forth in the United States Patent Number 1,386,021 of August 2nd, 1921, and for the sake of aiding in the clearness of understanding of the invention those parts which correspond substanti ally to the patent referred to have been marked with the same reference characters.

7 In the drawings Fig. 1 is a top plan view a of the machine according to my invention;

Fig. 2 is a side. elevation showing the parts upon which the improvements according to this'in vention are applied, in sectional view;

Fig. 3 shows a portion of the parts provided of the machine.

with the improvements in perspective view as seen from the backside and left hand side Fig. 4 is an elevation of an exchangeable counting mechanism which is disposed upon the support for the paper carriage.

In order to provide the necessary space for the combination with the improved elements of this invention the printing mechanism disclosed in the Patent 1,386,021 is disposed farther to the rear than in the patent referred to and the parts of this invention are disposed in the space thus obtained in front of these printing instrumentalities. In' addition to the shaft 204 for the printing means (Fig. 2) another shaft 204 has been provided in this invention for the mounting of the mechanism for the printing elements, while the operating parts which are to act upon the calculating or adding device proper are carried by the shaft 204 and the rod 195 has been correspondingly extended towards the rear.

A keyboard having denominational rows of keys 27 is shown in Fig. 1, the keys of which, when depressed control the excursions of their denominational stop bars 40, by contact with the. usual shoulders thereon.

The rear ends of the stop bars connect at 41 to denominational angle levers 74, the upper divergent arms of which carry segmental adding racks to operate the individual denomina ional wheels 61 of a main totalizer. S table carrying mechanism is provided for the main totalizer 61, all as fully explained in the U. S. Patent No. 1,386,021, heretofore referred to.

The main totalizer or calculating device is located some distance forwardly of the recording mechanism, hereinafter described.

To the horizontal legs 7 1?) of the levers 7a which are rockingly disposed upon the shaft 152 the legs 500 of the three armed lever 500 are pivotally connected by means of the connecting links 161. .The legs 500 of the three. armed levers 500 are linked to the bars 501 and the .legs 500 are linked to the type printing rods 163. At the upper ends of the rods 501 the rack bars 502 are arranged which are provided with longitubar 260.

t'iiwer-aga .thgreby causing the bar 40 dinal openings 502, 502 adapted for the reception of the guide pins 501E, 501 provided on the bars 501, so that the rack bars are displaceably guided with relation to the bars 501 (Fig. 3). The rack. bars 502 in their positions of rest are disengaged from the gear wheels 502 of the counting mechanisms Z1 to Z3. The gear wheels or pinions 502* are in operative connection with the numeral wheels 502 (Fi 2) of the counting mechanisms by means 0 the intermediate Wheels 528 528 etc. The counting mechanisms are provided with the bars or projections L (Fig. 4) which are engaged with the bar 260, as shown in Fig. 4. At the left and right hand side walls 260 and 260 of each counting mechanism levers 260 are displaceably provided by means of the slotand pin connection 260 and 260, each of these levers 260 being constantly forced towards the right (Fig. 4) by means of a spring 260 which is secured between the lever 260 and a pin 260. The two levers 260 of each counting mechanism Z1 to Z3 are connected to each other by a bar L similar to the bar L. Each of the levers. 260 of each counting mechanism is provided with the bent extension, finger or shoulder 260 and one of the two levers 260, preferably the right hand lever carries a shoulder or extension 260 adapted to become engaged with the slots 260 (Fig. 1) of the When it is desired to detach a counting mechanism of, this kind from the bar 260 it is only necessary for the operator to press with his thumb against the front wall of the counting mechanism and then to pull the levers 260 forward by placing his foreinst the. shoulder or projection 260 L to become disengaged from the bar 260so that the particular counting mechanism may now be easily detached. By this means it becomes possible to dis ose each counting mechanism at any desire point of the-bar 260 and to readily detachit therefrom and to lock the counting 1 mechanisms from lateral displacement upon the bar 260 by the engagement'of the extension 260* in the slot 260 of thebar 260. It should be understood that any number ofcounting. mechanisms may be mounted upon the bar 260 in accordance with the particular purpose for which the invention is intended, three such counting mechanisms being provided for instance in connection with the exemplification described (Fig. 1). The bar 260 is connected to the paper carriage by the intermediary of the webs 260, so that the bar 260 is carried ,along'by the movement-of the paper carriage and is guided by means of the rollers R upon the bar. S which is secured to the side walls 2 and 3.

The gear wheels 502 (Fig. 3), 528 and the I numeral wheels 502' are rotatably mounted;

Spectively. A

upon the'common shafts A1, A2 and A3, re-

spring 503 which is secured to the stud 501 and to the rack bar 502 keeps the stepped portion 502 of the rack barin the normal position of the parts in engagement with the shoulder 504 of a lever 504 which is rockingly disposed upon a shaft 504 mounted in the side walls 2, 3. An additional lever 505 which is likewise rotatably arranged upon a shaft 505 which is. common to all of these levers, is adapted to become engaged at its projection or shoulder 505 with the stepped portions 504, 504 of the lever 504. A spring-505 which is secured to the lever 50.4 and with its other end to the lever 505 operates upon these levers in such a manner that the shoulder or lug 505 is always kept in engagement with one of the steps 504", 504

of the lever 504. These elements serve for the transmission of the tens and in regard to their function and operation which will be more particularly described hereinafter these parts correspond to the action of the accumulating or tens transmission means shown in Figures 9 and 10 of the prior Patent 1,386,021 above referred to. A universal supporting yoke 506, 506, 506 is connected to the levers 507, 508 by means of slot and pin connections 506, 507 506", 508 by the action of springs 507", 508 which are secured to the pins 507, 508 of the levers 507, 508 and to the universal yoke 506, 506, 506 and which cause said pins to be kept inengagement with the upper end of the slots 506, 506. The universal eupporting yoke 506, 506, 506 itself rests in its normal position with its lower ends 506, 506 upon the stops 5060', 506d and is drawn against the bars 501 and kept in engagement therewith by the springs 509, 510 which are connected to the yoke and to the sidewalls 2, 3. The rocking movement of the bars '501 in the clockwise direction is limited by lever 514 is pivotally connected to a bar 514: I

theother'end of which carries a stud 514 which (projects into a slot 517 of the ,lever'517 v secure to the shaft 204. 'Upon the shaft 204 two levers 518" and 519 are. fixedly secured with studs 518, 519 adapted to operatively engage the shoulders or lugs 507, 508 of the levers 507 508 which are pivoted to the side walls 2 and 3 by means of the screws 520, 521. The lever 519 corresponds to the lever 220 of United States Patent 1,386,021.

The bar 514 hastwo notches 514 and 514 adapted for engagement with. the nose or shoulder 522 of an angle lever 522 which is rotatably mounted on the side wall 3 by means of a screw 523. This engagement is produced by a spring 522? which is connected to the lever 522 and to the pin 3a, arranged ou -the side wall 3, this '5 ring acting upon the lever 522 in the clockwlse direction. The leg 504" i of the lever 504 adapted to be influenced bar 525 secured to the side plates of the said counting mechanisms. The free leg 524 of the lever 524 is kept in engagement with the periphery of a cam disc 528 for the transfer of the tens which cam disc is secured to the gear wheel 528 this engagement being accomplished by a spring 527 which is connected to the lever 524, and to a common bar 526 secured to the side walls of the counting mechanisms. By this means the particular cam 528 coresponding to a certain denomination acts upon the lever 504 belonging to the next following higher denomination by the operation of the lever'524, as will appear from. an inspection of Figure 3.

Since the ratio of the wheels 528 to the pinions of the numeral wheels 502 is as 1 to 2, two diametricallyopposed cam noses 528 and 528* are provided on the cam disk 528 to act upon the end 524 of the transfer lever 524 each time that the corresponding numeral wheels 502 pass from 9 to 0. V

The operation of the improvement is substantially as follows By means of the rocking of the hand lever 5 in the direction of the arrow P the lever 155 is moved in the same direction, as has been extensively set forth in U. S. Patent 1,386,021 referred to. Now, inasmuch as this lever 155 is linked to the lever 517 by means of the link rod 195, this lever 517, as well as the levers 5 18, 519 which are rigidly secured to the lever 517 by means of the shaft 204, will follow the movement of the lever 155. The pins 518, 519" of these levers will thereby be forced to act upon the noses 507 508 of the levers 507, 508 which are thereby rocked in the clockwise direction. The purpose of this movement will be more fully described hereinafter. During the further course of the movement of the levers 518, 519 their pins 518", 519 will snap off and become disengaged from the lugs or noses 507, 508, whereupon the levers 507, 508 become free to be returned to their inoperative position by the action of gravity and the weight of the universal yoke 506506-506 which is linked to the levers 5'07, 508..

During these movements the roller 154 (Figure 2) of the lever 151 has escaped from i the cam surface 155 of the lever 155, Whereu on the lever 74, as is well knownis rotater anticlockwise by the action of the springs 42, that is to say, only as far, as permitted by the value which has been set by the keys 27.

ment the bars 163 and 501 linked to this le-.

ver are likewise moved upwards more or less in accordance with the quantity which has been set by the operation of the keys.

When these bars 163 and 501 have reached their highest position corresponding to the adjusted quantity, the quantity is recorded or printed in accordance with the patent above referred to. It is however possible to still rock the hand lever 5 fora certain additional distance, which is accomplished by the shape of the lever 155 whichis described in detail in Patent 1,386,021. Inasmuch as the lever 517 (Figure 2) is linked to the lever 155 by means of the link rod 195, the lever 517 will follow the movement of the lever 155 caused by the supplemental stroke of the lever 5, and by this means the lower end of the slot or aperture 517 (Figure 3) provided in the lever 517 will strike the stud 514 secured to the bar 514 so that the bar 514 is raised,

when the lever 517 continues its movement.

This will cause the angular lever 514 to be rocked anticlockwise and the universal bar 511 to act upon the rack bars 502 contrary to the action of the springs 509 and 510, the rack bars being thereby caused to be engaged with the wheels 502 of the counting mechanism that is in the operative position (the counting mechanism Z in the exemplification of Figure 2). The universal bar 511 is then retained in its position by the locking pawl 522 under the influence of the spring 522 This pawl forces its nose 522 into the notch 514 of the bar 514 and thereby locks the bar 514 against the action of the springs 509, 510, it being necessary that the tensional force of' of the spring 503 to move in the same direction. This will cause the rotation of the gear wheels 502 which in their turn by means of the intermediate wheels 528, 528 etc. cause the rotation of the number wheels 502 so as to indicate the quantity corresponding to the particular key in the well known manner. At the end of their movement the rack bars with their faces 502 act upon the noses 504 of the levers 504 and are thereby arrested, while the bars 501 contrary to the action of the springs 503 are still free to be lowered one additional step, by which means the type bars 163 may still be positioned with their uppermost types below'the printing point. If upon the descent of the rack bars a numeral wheel, for instance the numeral wheel operated by the intermediate wheel 528 is rotated beyond the value or quantity 9, a tens-transmission operation becomes necessary which is effected in the following manner; If the number 9 is seen in the inspection window, the tens-switching cam 528 occupies the position of Figure 3 with relation to the lever 524.

Upon now continuing the rotation of the gear w eel 528 in the direction of the arrow P so that the numeral wheel 502 is rotated from the number 9 to zero 0, the cam node 528 acts upon the inclined surface 524', and as a result thereof the lever 524 is'rocked against the action of the spring 527. This causes the nose 524 of the lever to strike the leg 504 -of the lever 504 which is thereby rocked contrary to the action of the spring 505 about the shaft 504 common to these levers 504. 'As a result thereof the lever 505 which is likewise under the influence of the spring 505 engages with its nose 505 behind the nose 504 of the lever 504,"so that the latter is retained in its worked position. The rack bar correspondingmo this lever becomes thereby single additional step, so that its face502 will now bear against the face 504 of the lever 504, thereby causing the corresponding numeral wheel to be rotated for the amount of a digit.

comes adapted to act upon the stud 514 After the bars 163 and 501have reached their lowest position,that is to say, after the transmission of the amount into the counting mechanism Z and into the stationary counting mechanism and the rintingof the amount, as described in atent 1,386,021, have been effected, the hand lever 5, as described in the patent referred to, may still be rocked for a certain distance, and this movement, as already explained is communicated by means of the link bar 195 to the lever 517 and to the levers 518, 519 which are likewise fixedly secured to the shaft 516. This wlll cause the studs 518., 519*, respectively Socured to the levers 518, 519 to act upon the lower sides of the noses 507 508 of the levers 507, 508 which are thereby rocked anticlockwise contrary to the action of the springs 507", 508", while thestuds 507 508 slide 1n the slots 506, 506*. As soon as the levers 507, 508 as a result of this movement have been shifted away from the path of movement ofthe pins 518, 519, the levers are returned to their inoperative position by means of the springs 507?, 508". I 7 I Simultaneously therewith the upper end of the slot 517 provided in the lever 517 bej-E o the bar 514 which is thereby lowered, causing the nose 522 of the locking pawl 522 to be forced out'of the notch 514 and to become engaged with the notch 514". By the descent of the bar 514 the levers 513, 514 are rocked in the'clockwise direction, and the bars 501 are thereby released from'the universal bar 511, and become disengaged from the gear wheels 502 by the springs 509, 510 and by the, universal yoke 506-- 5065 06. 1

adapted to be farther lowered a.

.At the end of the return movement of the hand lever 5, that is to say after a calcula-ting operation, all the members have reassumed their normal idle positions, with the exception however of the levers 504 which may have been rocked tothe left as a result of a tens transmission operation.

They are returned to their initial positions at the beginning of the succeeding crank operation in the following manner. It has already been pointed out above that at the beginning of the forward movement of the hand lever 5 the levers 507 508 are rocked, clockwise by the studs 518, 519, while the studs 507, 508 act upon the upper ends of the slots or longitudinal apertures 506, 506" of the universal yoke 506506-506 and raise the yoke which latter with its face 506' acts upon the locking levers 505 of all levers 504 which might have been rocked out of their normal position in a transferring operation, these levers 505 being raised wlth the result that their noses 505 are moved out of the path of the noses 504 and into the path of the noses 504. Thus, the levers 504 under, the influence of their springs 505 are rocked to the right, and become adapted to have their noses 504 pushed again under the rack bars 502 upon the simultaneous raising of the bars 501.

If a quantity has been transmittedfor instance into the counting mechanism Z2, the paper carriage is displaced to the left by means of the levers designated by the numeral 268 sufficiently, so that now the counting mechanism-Z3 is positioned opposite the rack bars 502, and a quantity may now be introduced into this counting mecha nism which is simultaneously added to the amount contained in the stationary counting or adding mechanism 61. Y

It should be understood that the invention is not restricted to the particular exemplification'herein shown and described, and it may be modified in accordance with varying requirements of the operator and without deviating thereby from the principles se forth in the appended claim.

I claim In a machine of the class described, the combination with visible main accumulator dials incapable of endwise travel, and a visible printing mechanism including a traveling paper carriage, a platen thereon and type carriers; of a plurality of sets of subaccumulator dials disposed between the' platen and the main accumulator dials and so'situated that the numerals on the dials, and the printed numerals, may be 'simul: taneously visible from one-point during the normal operation of the machine, said subaccumulator dials'being connected to travel with the paper carriage relatively to the main accumulator dials to enable simultaneous accumulation andreading from all the accumulator dials and printing mechanism, and a single set of actuators for the sets of subaccumulator dials, said actuators being located in front of and connected with'the t e carriers. a

n testimony whereof I aflix my signature.

HANS KNOLL. 

